應用顆粒阻尼技術於動力機械引擎轉子系統 的減振實驗與分析;Application of Particle Damping Technology to Dynamic Mechanical Engine Rotor Systems

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Title:	應用顆粒阻尼技術於動力機械引擎轉子系統的減振實驗與分析;Application of Particle Damping Technology to Dynamic Mechanical Engine Rotor Systems
Authors:	賴碩彥;Lai, Shuo-Yan
Contributors:	機械工程學系在職專班
Keywords:	動平衡校正;雙面平衡法;顆粒阻尼器;減振效益;工作轉速;負載扭矩;顆粒粒徑
Date:	2025-05-06
Issue Date:	2025-10-17 12:58:22 (UTC+8)
Publisher:	國立中央大學
Abstract:	本研究使用雙面平衡法並引進顆粒阻尼技術應用於偏心轉子的校正，儘量的平衡轉子系統的慣性力，以及藉由顆粒與轉子系統平衡面內的腔壁碰撞及摩擦消耗過多的振動能量，降低機械轉動時的振動。實驗設計採用3種工作轉速（600 rpm、800 rpm、1000 rpm）、3種負載扭矩（1.0 N-m、1.5 N-m、2.0 N-m），以及3種阻尼顆粒粒徑（φ=2 mm、φ=3 mm、φ=4 mm），觀察引擎轉子系統動態行為。首先依照ISO21940的規範，將動平衡的允收等級設定為G2.5，並且將2組引擎轉子系統依序完成動平衡校正，動平衡完成後安裝於機台上，並進行運轉，採用渦電流位移計量測轉子軸心的徑向位移與軌跡，並使用加速規量測振動加速度的動態行為，藉由軸心最大的徑向位移與RMS值、功率頻譜密度與振動能量等物理量，量化系統的振動行為。研究結果顯示，裝置顆粒阻尼器PD的轉子系統相較於等效質量系統（EM），在所有實驗條件下皆呈現顯著的減振效果，且顆粒阻尼的技術適用於高轉速與高扭矩的工作環境，其中粒徑4 mm的顆粒在大部分條件下的表現最穩定。顆粒阻尼技術不僅能有效完成動平衡的校正外，同時能提供顯著的減振能力，提升轉子系統的穩定應用與減振效益。;This study adopts the dual-plane balancing method and introduces particle damping (PD) technology for the correction of eccentric rotors. The primary objective is to balance the inertial forces of the rotor system as effectively as possible while reducing vibration during mechanical rotation. This is achieved through energy dissipation caused by the collision and friction between the damping particles and the cavity walls within the balancing planes of the rotor system. The experimental settings include three operating speeds (600 rpm, 800 rpm, and 1000 rpm), three load torques (1.0 N-m, 1.5 N-m, and 2.0 N-m), and three particle diameters (φ = 2 mm, φ = 3 mm, and φ = 4 mm). These parameters were varied to observe the dynamic behavior of the engine rotor system. In accordance with ISO 21940, the balance quality grade was set to G2.5. Two sets of engine rotor systems were sequentially subjected to dynamic balancing corrections. After balancing, the rotors were installed on the test rig for operation. Radial displacement and orbit of the rotor shaft were measured using eddy current displacement sensors, while the dynamic vibration acceleration behavior was monitored with two accelerometers respectively on the two bearings. System dynamic characteristics was quantitatively assessed using metrics such as the maximum radial displacement of the rotor shaft, root mean square (RMS) values, power spectral density (PSD), and response vibration energy. The experimental results demonstrate that the rotor system equipped with particle dampers (PD) exhibits significant vibration suppression compared to the equivalent mass (EM) system under all tested conditions. Furthermore, the particle damping technique proves effective in high-speed and high-torque operating environments. Among the tested particle sizes, the 4 mm particle damper yielded the most stable performance across most conditions. The study confirms that particle damping not only facilitates effective dynamic balancing correction but also provides substantial vibration reduction, thereby enhancing the stability and overall vibration mitigation performance of rotor systems.
Appears in Collections:	[Executive Master of Mechanical Engineering] Electronic Thesis & Dissertation

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